diff --git a/app/models/pet.py b/app/models/pet.py
index b4df0df..8218c3d 100644
--- a/app/models/pet.py
+++ b/app/models/pet.py
@@ -11,5 +11,7 @@ class Pet(db.Model):
   location = mapped_column(db.String(255), nullable=False)
   sex = mapped_column(db.String(1), nullable=False)
   height = mapped_column(db.Float, default=0, nullable=False)
+  registrar_id = mapped_column(db.Integer, db.ForeignKey('user.id'), nullable=False)
   registration_date = mapped_column(db.DateTime, default=datetime.datetime.utcnow, nullable=False)
-  kind = relationship("PetKind")
\ No newline at end of file
+  kind = relationship("PetKind")
+  registrar = relationship("User")
\ No newline at end of file